Tag: ASP.NET 4.0

If you are running your application within a .NET 4.0 application pool (IIS 7.0 or IIS 7.5) or your web site is configured as an ASP.NET 4.0 web site (IIS 6.0) and would like to show your clients an “under maintenance” page for a limited time, the easiest way is to put a file named…

Microsoft will host a webcast to address customer questions on latest published security bulletin about vulnerability in ASP.NET which could allow denial of service: Title: Information About Microsoft’s December 2011 Out-of-Band Security Bulletin ReleaseDate: Thursday, December 29, 2011, at 1:00 P.M. Pacific Time (U.S. & Canada). URL: https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032502798 For more information about the vulnerability and…

This is an overlooked behavior which may break your ASP.NET application if you are using Session_OnEnd or Session_End events in Global.asax. Here is a snippet from related article from MSDN: The Session_OnEnd event is only supported when the session-state HttpSessionState.Mode property value is InProc, which is the default. If the session-state Mode is set to…

PSSCOR extension is a debugger extension which is super-set of SOS.DLL. It is used for debugging .NET issues with WinDBG, such as high memory / CPU usage, crashes, etc… We have released PSSCOR2 for .NET 2.0 related issues before and we were using PSSCOR4 for a long time in Microsoft for .NET 4.0 related issues and…

This is a hot topic discussed in the forums and we have decided to put this on a knowledge base article: Web services may fail on Microsoft Internet Information Services (IIS) 7.5 and Windows 7 Service Pack 1 with .NET Framework 4.0 due to extensionless URL handlershttp://support.microsoft.com/kb/2520479 Here is the symptoms you may see: Consider…

Session objects are vital components in most of web applications. ASP.NET provides a few options to store the sessions, such as in-proc and out-proc. In-proc sessions are stored in the worker process memory while the out-proc sessions are stored in another process. You have two options when working with out-proc sessions: SQL Server or State…